Al Schneider's Rocky Mountains Plant Descriptions

Limestone Hawksbeard
Crepis intermedia
Aster family (Asteraceae)

The Hawksbeards belong to that class of Sunflower that have only and herbage with milky juice. When compared to its sister species, C. acuminata, it is not as tall and branching and has fewer flower heads, although both plants have flowers with the same narrow, cylindrical shape. C. occidentalis, another sister species, is much shorter, and has fewer, broader flower heads that are often sticky . "Intermedia" means "intermediate," and describes how this plant likely originated as a complex hybrid, with C. acuminata and C. occidentalis in the hybridization.


©2009 Paul Slichter

Description

Up to 2 feet tall, with upright stems, branching at the top. Leaves are slightly to moderately hairy, the lower ones up to 12" long, , the upper leaves are reduced in size. The 10-60 flower heads are narrow, almost 1" high and 1/2" wide, and cylindrical or slightly bell shaped, usually with short, stiff black hairs that are not . The flowers are yellow, with less than an 1" across, each flower head containing 7-16 , and no flowers.

Field Marks

Sunflower family plant with branched stems topped with small yellow flowers and flower heads with short, stiff black hair, and leaves .

© Al Schneider

corolla -- The name for all the petals of a flower taken together.

disc flowers are those in the center of a sunflower or daisy. Not a ray flower.

ray flowers -- The outer petals of a sunflower or daisy are ray flowers.

Glands are plant structures that secrete liquids, salts or other substances. Glands often appear as hairs with a drop of liquid at the end.

included -- Enclosed and not protruding. For example, stamens within the corolla.

genus -- A subdivision of a botanical Family in which all members have a significant number of similar characteristics.

pinnately lobed -- Having lobes pinnately arranged on the central axis.